Breathing tube for lung diagnostics



FIG. 1 is a front perspective view of a breathing tube for lung diagnostics according to my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The solid lines in FIGS. 1-7 illustrate a breathing tube for lung diagnostics according to the present disclosure. In the drawings, the broken lines are for the purpose of illustrating environment only and form no part of the claimed design. 

CLAIM The ornamental design for a breathing tube for lung diagnostics, as shown and described. 